EP4077986A1 - Valve with variable opening - Google Patents

Valve with variable opening

Info

Publication number
EP4077986A1
EP4077986A1 EP20821224.1A EP20821224A EP4077986A1 EP 4077986 A1 EP4077986 A1 EP 4077986A1 EP 20821224 A EP20821224 A EP 20821224A EP 4077986 A1 EP4077986 A1 EP 4077986A1
Authority
EP
European Patent Office
Prior art keywords
plate
orifice
valve
peripheral
orifices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20821224.1A
Other languages
German (de)
French (fr)
Inventor
Sébastien Decker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TotalEnergies Onetech SAS
Original Assignee
TotalEnergies Onetech SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TotalEnergies Onetech SAS filed Critical TotalEnergies Onetech SAS
Publication of EP4077986A1 publication Critical patent/EP4077986A1/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
    • F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
    • F16K3/085—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres the axis of supply passage and the axis of discharge passage being coaxial and parallel to the axis of rotation of the plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/072—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members
    • F16K11/074—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with pivoted closure members with flat sealing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack

Definitions

  • the subject of the invention is a valve with a variable orifice, in particular for controlling the flow rate and / or the pressure drop of a mixture of solids and fluids such as that present in petroleum processing equipment, in particular in the units of catalytic cracking.
  • variable orifice devices in the form of conventional slide valves or butterfly valves.
  • fixed orifice discs are used in conjunction with slide valves or butterfly valves to control the pressure of a process unit or the pressure of a flue gas being routed to downstream equipment.
  • Valves are also used comprising a cylindrical tubular duct and a flat plate extending transversely to the duct and integral with the latter, this flat plate being pierced with a central orifice and a plurality of peripheral orifices arranged around the pipe. central orifice.
  • the central orifice is equipped with a pivoting shutter (butterfly valve) to control the flow through it.
  • a pivoting shutter (butterfly valve) to control the flow through it.
  • This may be, for example, debris from insulating coatings, coatings for protection against erosion and / or protection against the aggressiveness of corrosive gases, depending on the nature of the circulating fluid.
  • the latter can in fact be a mixture of solids and fluids, the solids being able to induce erosion, the fluids being able to be corrosive and the temperature at which they are transported can be very high. This plugging problem is observed for any device with fixed orifices.
  • Document US4516606 describes a disc valve for controlling the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment.
  • This valve comprises a cylindrical tubular duct, a first flat plate extending transversely to the duct and integral with the latter, this first flat plate being pierced with a central orifice and a plurality of orifices arranged around the orifice. central.
  • the valve comprises a second flat plate with orifices extending transversely of the duct and having a plurality of ports corresponding in size and spacing to the ports in the first plate.
  • This second plate further comprises a cylindrical tubular support extending through the central opening of the first plate for suspending and pivotally mounting the second orifice plate relative to the first plate and means engaging a peripheral edge of the second orifice plate for rotatably adjusting the relative positions of the orifices of the first and second orifice plates.
  • This type of valve is also subject to the plugging of the various openings present.
  • the fluid passing through this valve contains suspended solid particles, these particles can also accumulate in the annular space between its two plates. Indeed, when the pipes which contain this type of valve are of large diameter (1m and more), it is very difficult to keep the two plates constituting the valve in intimate contact and the space being created between the plates at the level of the orifices. at the periphery is sufficient to allow the entry of solid particles of small diameter. In this case, the seizure of the valve may appear, preventing any manipulation and regulation of the process.
  • the fluid passage restriction has a geometry such that the fluid passing through the variable offices is deflected from a "straight" path. and can impact the walls of the pipe, leading to accelerated degradation of the latter at the point of impact.
  • variable orifice valve which is less prone to plugging, in particular due to falling debris and seizing by the presence of solid particles in the process fluid passing through it.
  • a first object of the invention relates to a variable orifice valve for controlling the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment, comprising:
  • first flat plate extending transversely to the duct and integral with the latter, this first flat plate being pierced with a central orifice and a plurality of peripheral orifices disposed circumferentially around the central orifice,
  • a second flat plate extending transversely to the duct and mounted so as to be able to rotate inside the latter, in particular relative to an axis X of the tubular duct, the second plate having a plurality of orifices, at least of which has the shape and the spacing, possibly also the size, correspond to those of the orifices of the first plate,
  • an adjustment system engaging the second plate to adjust the relative positions of the peripheral orifices of the first and second plates by rotating the second plate, in particular along an axis perpendicular to the plates.
  • each peripheral orifice of the first plate is surrounded by a chimney integral with the first plate and projecting from one side thereof located on the side opposite the second plate.
  • the valve of the present invention is generally used to control the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment. Such fluids can lead to significant erosion of the valve or of the pipe in which it is placed, especially in the event of misalignment of the orifices, as explained above.
  • each peripheral orifice of the second plate can be surrounded by a chimney integral with the second plate and projecting from one face thereof located on the side opposite to the first plate.
  • a flow arriving from the side of the first plate and leaving the side of the second plate is guided by the chimneys integral with the latter, this which makes it possible to straighten out its direction, in particular to guide it in a direction perpendicular to the direction of the second plate.
  • These guide ducts are thus advantageously designed to guide a flow leaving in a predetermined direction, preferably parallel to an axis of the tubular duct of the valve.
  • the height of the chimneys can advantageously be greater than or equal to three times the internal passage diameter of the orifices which they surround, and preferably greater than or equal to 5 times the internal passage diameter.
  • Each chimney can be formed from a wall, the internal surface of which extends in the extension of an internal surface of the orifice it surrounds.
  • each chimney can have an internal section of the same shape and of the same size as the shape and size of the internal section of the orifice it surrounds.
  • Each chimney can be formed from a wall, at least the internal surface of which extends perpendicularly to the plate to which it is secured.
  • each chimney can be made in one piece with the plate to which it is attached.
  • Each chimney can extend over a height equal to at least three times the internal passage diameter of the peripheral orifice to which it is secured in a direction perpendicular thereto.
  • Each chimney secured to the second plate can extend over a height equal to at least five times the internal diameter of the peripheral orifice to which it is secured, in a direction perpendicular thereto.
  • the first plate can be provided, on the side of its face directed towards the second plate, with at least one sealing elements surrounding a peripheral orifice of the first plate, each sealing element having a first edge integral with the first plate and a second opposite free edge in sliding contact with the second plate, in particular with its face facing the first plate.
  • an internal surface of a sealing element closest to the surrounded peripheral orifice extends in the extension of an internal surface of the surrounded orifice, preferably perpendicular to the first plate.
  • an outer surface of the sealing element furthest from the surrounded peripheral orifice has a flared shape in the direction of the second plate.
  • a support element may be a tubular support integral with the first plate and connect in a fluid-tight manner the central orifice of the first plate to the central orifice of the second plate.
  • the tubular support thus allows the passage of fluid through the plates without access to the inter-plate space. This arrangement prevents small solid particles possibly present in the transported fluid from entering the inter-plate space and jamming the rotation of the second plate.
  • each plate may be of a smaller dimension than the central orifices.
  • peripheral orifices can be arranged equidistant from each other and / or from the central orifice of the plate of which they are part.
  • the invention also relates to a vertical or substantially vertical pipe intended to receive a fluid circulating in a direction of flow from top to bottom, comprising a valve according to the invention, arranged so that the fluid enters through the orifices of the first plate and exits through the holes in the second plate.
  • the invention also relates to the use of a valve according to the invention in a pipe extending vertically or substantially vertically.
  • substantially vertical direction is meant a direction deviating from a vertical direction by at most 20 °, or even by at most 10 °.
  • Figure 1 schematically shows a longitudinal sectional view of a valve according to one embodiment of the invention.
  • FIG. 2 Figure 2 schematically shows a top view of the valve of Figure 1.
  • FIG. 3 represents a perspective view of the two assembled orifice plates of a valve according to one embodiment of the invention.
  • Figure 4 shows a perspective view from below of the second orifice plate of Figure 3.
  • Figure 5 shows a perspective view from above of the first orifice plate of Figure 3.
  • Figure 6 shows a perspective view of two superimposed orifice plates of a valve according to another embodiment of the invention.
  • Figure 7 shows an axial sectional view of a sealing element according to one embodiment.
  • Figure 8 shows an axial sectional view of sealing elements according to another embodiment.
  • Figure 1 shows a variable orifice valve 10 for use in controlling the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment.
  • the valve 10 comprises a tubular conduit 12 of axis X intended to be connected to a pipe 1 in which the valve must be placed. To this end, it has for example two flanges 12a, 12b at its ends which can be assembled to similar flanges of the pipe 1. Alternatively, the tubular duct 12 can be welded end to end with the main pipe in which the valve will be placed. .
  • the fluids circulate through the valve 10 in a direction parallel to the X axis of the duct 12, generally from top to bottom as represented symbolically by the arrow F in FIG. 1.
  • this type of tubular duct 12 is of cylindrical shape.
  • the valve 10 also comprises a first flat plate 14 and a second flat plate 16 which extend transversely to the duct 12, that is to say perpendicular to the axis X of the duct 12, inside the latter. .
  • the second plate 16 is mounted so as to be able to rotate around the X axis of the duct 12. Most often, these two plates are of the same shape and size.
  • Each plate 14, 16 is pierced with a central orifice 141, 161, respectively, and a plurality of peripheral orifices 143, 163, respectively, disposed circumferentially around the central orifice 141, 161.
  • the various orifices of each of the first and second plates correspond at least in shape and spacing, preferably in size, shape and spacing, so that when the two plates 14, 16 are positioned one above the other, the centers of their central orifice coincide and a rotation of the two plates with respect to an axis passing through these centers allows a superposition greater or lesser of the peripheral orifices as shown in FIG. 2.
  • the positions and shapes, advantageously also the size, of the various orifices of each of the first and second plates are such that these orifices correspond, namely are aligned according to a position perpendicular to the plates, in at least one relative position thereof.
  • the adjustment of the relative position of the two plates by rotation around the axis X passing through the centers of the central orifices 141, 161 makes it possible to modulate, to adjust, the section of passage of the fluids through the peripheral orifices 143, 163.
  • peripheral orifices are smaller in size than the central orifices.
  • the peripheral orifices are preferably arranged equidistant from each other and from the central orifice which they surround.
  • At least one support member supports second plate 16 pivotally relative to first plate 14.
  • This tubular support 18 can be fixed in a sealed manner to the first plate 14 by any suitable means, for example by welding if the two parts are metallic, or by riveting, screwing, etc.
  • the tubular support 18 has an upper flange 18a resting on the face 14a of the first plate 14 and welded to the latter (FIG. 1).
  • the tubular support 18 has at its other end a lower flange 18b retaining the second plate 16 which is thus pivotally mounted on the support.
  • the invention is of course not limited to this arrangement, the tubular support 18 for example being able to be fixed to the face 14b of the first plate around its central orifice.
  • the tubular support 18 can also be made in one piece with the first plate, for example in the extension of its central orifice and pass through the second plate.
  • the second plate can be rotatably mounted on the tubular support by means of any other means or support allowing rotation (bearing, support bracket, etc.).
  • the valve 10 further comprises an adjustment system 20 coming into engagement with the second plate 16 to adjust the relative positions of the peripheral orifices 143, 163 of the first and second plates by rotation of the second plate, here around the X axis of the valve. led 12.
  • this adjustment system 20 comprises a toothed sector 201 integral with the periphery of the second plate 16 coming into engagement with the teeth of a rack 202 mounted to slide in translation along the line. direction of arrow F1 in FIG. 2.
  • the movement of this rack can be controlled by a movement member 203 such as a stepping motor, a system of hydraulic jacks or any other suitable member.
  • the toothed sector 201 protrudes from the periphery of the second plate 16. This toothed sector may not project from the periphery of the second plate 16, as in the example of FIG. 4, where the toothed sectors 201 are integral with the face 16b of the second plate.
  • one or two toothed sectors 201 are integral with the face 16b of the second plate.
  • the two toothed sectors 201 can then be arranged in diametrically opposed locations of the second plate as shown in FIG. 4.
  • the invention is of course not limited to a particular form of the adjustment system, provided that it makes it possible to do so. rotate the second plate relative to the first plate.
  • each peripheral orifice 143 of the first plate 14 is surrounded by a chimney 145 integral with the first plate 14 and projecting from a face 14a thereof situated on the side opposite to the second plate 16.
  • each chimney 145 is made in one piece with the plate 14.
  • each chimney 145 is formed of a wall which has an internal section of the same shape and of the same dimension as the shape and the dimension of the internal section of the peripheral orifice 143 which it surrounds. These internal sections are here sections along planes perpendicular to the X axis of the duct.
  • the internal surface 145a of each chimney 145 extends in the extension (the continuity) of an internal surface of the peripheral orifice 143. This makes it possible to avoid inducing an additional disturbance of the flow of the fluid passing through the. valve and avoid erosion by solid particles contained in the fluid at the junction between the orifice and the associated chimney.
  • Each chimney 145 here extends in a direction perpendicular to the first plate 14, in other words parallel to the X axis of the duct 12, over a predetermined height.
  • This height is for example at least three times the internal diameter of the passage of the peripheral orifices and advantageously at most equal to the distance separating one end of the duct 12 (corresponding in the example to the flange 12a) from the face 14a of the first plate 14.
  • the height of the chimneys can be determined from a fictitious internal diameter calculated for a fictitious circular internal passage section of the same area as the surface of the internal passage section of the 'orifice.
  • each chimney 145 could be fixed to the first plate by any appropriate means, for example by welding, screwing, rivets.
  • the internal surface 145a of each chimney here extends parallel to the X axis of the duct 12.
  • this configuration is preferable, in particular so as not to disturb the flow passing through the peripheral orifices, configurations in which the chimneys have a flared shape, for example conical, are possible. Chimneys having a parallelepipedal internal cross section are also acceptable although not preferred.
  • each peripheral orifice 163 of the second orifice plate 16 is also surrounded by a chimney 165 integral with the second orifice plate and projecting from a face 16b thereof situated on the side opposite to the first orifice plate 14.
  • each chimney 165 is made in one piece with the plate 16.
  • Each chimney 165 also has an internal section of the same shape and of the same dimension as the shape and dimension of the tube. internal section of the peripheral orifice 163 which it surrounds.
  • the internal surface 165a of each chimney 165 extends into the extension (continuity) of the internal surface of the peripheral orifice 163.
  • Each chimney 165 here also extends in a direction perpendicular to the second plate 16, in other words parallel to the X axis of the duct 12, over a predetermined height .
  • This height is for example at least three times the internal diameter of the passage of the peripheral orifices, preferably at least five times the diameter of the passage of the peripheral orifices and advantageously at most equal to the distance separating one end of the duct 12 (corresponding to in the example with the flange 12b) of the face 16b of the second plate 16.
  • the height of the chimneys can be determined from a fictitious internal diameter as defined above.
  • each chimney 165 could be fixed to the second plate by any suitable means, for example by welding, screwing, rivets.
  • the internal wall 165a of each chimney here extends parallel to the X axis of the duct 12.
  • this configuration is preferable, in particular so as not to disturb the flow passing through the peripheral orifices, configurations in which the chimneys have a flared shape, for example conical, are possible.
  • the internal wall 165a of the chimneys 165 are oriented so as to direct a flow passing through its chimneys parallel to the X axis, possibly with a clearance tolerance to this axis of at most 5 °.
  • the first plate 14 is further provided, on the side of its face 14b directed towards the second plate 16, with a plurality of sealing elements 22-25 surrounding each of the peripheral orifices 143 of the first plate 14. These sealing elements 22-25 make it possible to ensure the sealing between the two plates, in line with the peripheral orifices of the valve.
  • sealing elements 22-25 are advantageously metallic.
  • One or more sealing elements may surround each peripheral orifice.
  • a single sealing element 22 (Fig. 1, 7) or three sealing elements 23, 24, 25 (Fig. 8) can be provided.
  • Each sealing element 22, 23, 24, 25 has a first edge 22a, 23a, 24a, 25a integral with the first plate 14 (of the face 14b thereof) and a second free edge 22b, 23b, 24b, 25b opposite in sliding contact with the second plate 16.
  • Such a sliding contact is defined so as not to allow the passage in the inter-plate space of particles possibly present in the fluid and to allow sliding of the sealing element (s) on the second plate.
  • these sealing elements 22-25 scrape the face 16a of the second plate located opposite the first plate 14 which makes it possible to prevent particles falling on this face 16a, for example when the peripheral orifices of the two plates do not coincide exactly, do not slip between the plates 14, 16.
  • this internal surface 22c extends in the continuation (continuity) of the internal surface of the surrounded orifice 143, preferably perpendicular to the plates.
  • this internal surface 22c has an internal cross section of the same shape and dimension as the internal section of the peripheral orifice around which the sealing element is arranged.
  • the outer surface 22d is then preferably of flared shape, here frustoconical, in the direction of the second plate.
  • the sealing element 23 closest to the surrounded peripheral orifice comprises an internal surface 23c extending in the extension (continuity) of the internal surface of the the orifice surrounded, preferably perpendicular to the plates.
  • this internal surface 23c has an internal cross section of the same shape and dimension as the internal section of the peripheral orifice around which the sealing element is arranged.
  • the outer surface 23d of the sealing element 23 can then be similar in shape to that of the inner surface 23c.
  • the sealing element 25 furthest from the peripheral orifice can then have an outer surface 25d of flared shape towards the second plate.
  • Its internal surface 25c is here similar in shape to that of the internal surface 23c and of the external surface 23d.
  • the geometry of the sealing element (s) 22-25 is however not limited to these examples.
  • the outer surface of the sealing element furthest from the peripheral orifice may be perpendicular to the first plate.
  • peripheral orifices of the first and second plates are all cylindrical in shape.
  • the invention is not limited to a particular form of peripheral orifices which may have an oblong, polygonal shape, for example a quadrilateral (rectangular, trapezoidal shape), an arc of a circle or the like.
  • the shape of the central orifices may have a shape other than cylindrical.
  • the valve according to the invention is particularly suitable for use in a refinery unit such as a catalytic cracking unit. This type of valve is then placed in pipes of large diameter (of the order of 1 meter).
  • the various elements of the valve are then made of steel, preferably stainless steel, and possibly covered with a protective coating against erosion.
  • the number of peripheral orifices depends on the dimensions of the valve and the fluid flow rate considered. For the aforementioned use, up to 10 or 12 orifices can be envisaged.
  • valve according to the invention could also be used in any application in which debris entrained by the fluids are liable to block the orifices of variable section (peripheral orifices).

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sliding Valves (AREA)
  • Lift Valve (AREA)
  • Taps Or Cocks (AREA)
  • Multiple-Way Valves (AREA)
  • Pipe Accessories (AREA)

Abstract

The invention relates to a valve with a variable opening (10) for controlling the flow of a mixture of solids and fluids, such as the mixture present in petroleum processing equipment. The valve comprises: - a tubular pipe (12), - first (14) and second (16) planar plates extending transversally to the pipe (12), one of which is rigidly connected to the pipe (12) and the other is able to pivot. The plates are drilled with a central opening (141, 161) and a plurality of peripheral openings (143, 163) which are arranged circumferentially around the central opening, and at least the form and spacing of which match. Each peripheral opening (143) of the first plate with openings is surrounded by a shaft (145) which is rigidly connected to the first plate with openings and projects from a surface (14a) of said plate, which surface is located on the side opposite the second plate with openings. Said shafts enable redirection of debris falling onto the first plate.

Description

DESCRIPTION DESCRIPTION
TITRE : VANNE A ORIFICE VARIABLE TITLE: VARIABLE ORIFICE VALVE
L’invention a pour objet une vanne à orifice variable, notamment pour contrôler le débit et/ou la perte de charge d'un mélange de solides et de fluides tel que celui présent dans un équipement de traitement du pétrole, notamment dans les unités de craquage catalytique. The subject of the invention is a valve with a variable orifice, in particular for controlling the flow rate and / or the pressure drop of a mixture of solids and fluids such as that present in petroleum processing equipment, in particular in the units of catalytic cracking.
Dans les procédés pétroliers utilisés dans les raffineries, il est fréquemment souhaitable de contrôler la pression dans une unité de traitement en utilisant des dispositifs à orifices variables sous la forme de vannes à tiroir classiques ou de vannes papillon. Parfois, des disques à orifices fixes sont utilisés conjointement avec des vannes à tiroir ou des vannes papillon pour contrôler la pression d'une unité de traitement ou la pression d'un gaz de combustion acheminé vers un équipement en aval. In petroleum processes used in refineries, it is frequently desirable to control the pressure in a processing unit using variable orifice devices in the form of conventional slide valves or butterfly valves. Sometimes, fixed orifice discs are used in conjunction with slide valves or butterfly valves to control the pressure of a process unit or the pressure of a flue gas being routed to downstream equipment.
On utilise également des vannes comprenant un conduit tubulaire cylindrique et une plaque plane s’étendant transversalement au conduit et solidaire de celui-ci, cette plaque plane étant percée d’un orifice central et d’une pluralité d’orifices périphériques disposés autour de l’orifice central. L’orifice central est équipé d’un volet pivotant (vanne papillon) pour contrôler le débit le traversant. En utilisation, lorsque ces vannes sont disposées de sorte que l’axe de leur conduit soit vertical ou sensiblement vertical, il arrive que les orifices soient obturés en partie ou en totalité par des débris venant de la canalisation dans laquelle est installée la vanne. Il peut s’agir par exemple de débris de revêtements isolants, de revêtements de protection contre l’érosion et/ou de protection contre l’agressivité des gaz corrosifs, selon la nature du fluide circulant. Ce dernier peut en effet être un mélange de solides et de fluides, les solides pouvant induire une érosion, les fluides pouvant être corrosifs et la température à laquelle ils sont transportés peut être très élevée. Ce problème d’obturation est observé pour tout dispositif à orifices fixes. Valves are also used comprising a cylindrical tubular duct and a flat plate extending transversely to the duct and integral with the latter, this flat plate being pierced with a central orifice and a plurality of peripheral orifices arranged around the pipe. central orifice. The central orifice is equipped with a pivoting shutter (butterfly valve) to control the flow through it. In use, when these valves are arranged so that the axis of their conduit is vertical or substantially vertical, the orifices may be partially or totally blocked by debris coming from the pipe in which the valve is installed. This may be, for example, debris from insulating coatings, coatings for protection against erosion and / or protection against the aggressiveness of corrosive gases, depending on the nature of the circulating fluid. The latter can in fact be a mixture of solids and fluids, the solids being able to induce erosion, the fluids being able to be corrosive and the temperature at which they are transported can be very high. This plugging problem is observed for any device with fixed orifices.
Le document US4516606 décrit une vanne à disque pour contrôler le débit d'un mélange de solides et de fluides tel que celui présent dans un équipement de traitement du pétrole. Cette vanne comprend un conduit tubulaire cylindrique, une première plaque plane s’étendant transversalement au conduit et solidaire de celui-ci, cette première plaque plane étant percée d’un orifice central et d’une pluralité d’orifices disposés autour de l’orifice central. La vanne comprend une deuxième plaque plane à orifices s’étendant transversalement au conduit et ayant une pluralité d'orifices dont la taille et l'espacement correspondent aux orifices de la première plaque. Cette deuxième plaque comprend en outre un support tubulaire cylindrique s’étendant au travers de l’ouverture centrale de la première plaque pour suspendre et monter de manière pivotante la deuxième plaque à orifices par rapport à la première plaque et des moyens venant en prise avec un bord périphérique de la deuxième plaque à orifices pour régler en rotation les positions relatives des orifices des première et deuxième plaques à orifices. Document US4516606 describes a disc valve for controlling the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment. This valve comprises a cylindrical tubular duct, a first flat plate extending transversely to the duct and integral with the latter, this first flat plate being pierced with a central orifice and a plurality of orifices arranged around the orifice. central. The valve comprises a second flat plate with orifices extending transversely of the duct and having a plurality of ports corresponding in size and spacing to the ports in the first plate. This second plate further comprises a cylindrical tubular support extending through the central opening of the first plate for suspending and pivotally mounting the second orifice plate relative to the first plate and means engaging a peripheral edge of the second orifice plate for rotatably adjusting the relative positions of the orifices of the first and second orifice plates.
Ce type de vanne est également sujet à l’obturation des divers orifices présents. Lorsque le fluide traversant cette vanne contient des particules solides en suspension, ces particules peuvent par ailleurs s’accumuler dans l’espace annulaire entre ses deux plaques. En effet, lorsque les canalisations qui contiennent ce type de vanne sont de grand diamètre (1m et plus), il est très difficile de maintenir les deux plaques constituant la vanne en contact intime et l’espace se créant entre les plaques au niveau des orifices en périphérie est suffisant pour permettre l’entrée de particules solides de petit diamètre. Dans ce cas, le grippage de la vanne peut apparaître, empêchant toute manipulation et régulation du procédé. D’autre part, lorsque les orifices de la plaque supérieure ne sont pas complètement alignés avec ceux de la plaque inférieure, la restriction de passage du fluide a une géométrie telle que le fluide traversant les officies variables est dévié d’une trajectoire « rectiligne » et peut venir impacter les parois de la canalisation, conduisant à une dégradation accélérée de cette dernière à l’endroit de l’impact. This type of valve is also subject to the plugging of the various openings present. When the fluid passing through this valve contains suspended solid particles, these particles can also accumulate in the annular space between its two plates. Indeed, when the pipes which contain this type of valve are of large diameter (1m and more), it is very difficult to keep the two plates constituting the valve in intimate contact and the space being created between the plates at the level of the orifices. at the periphery is sufficient to allow the entry of solid particles of small diameter. In this case, the seizure of the valve may appear, preventing any manipulation and regulation of the process. On the other hand, when the orifices in the top plate are not completely aligned with those in the bottom plate, the fluid passage restriction has a geometry such that the fluid passing through the variable offices is deflected from a "straight" path. and can impact the walls of the pipe, leading to accelerated degradation of the latter at the point of impact.
Il existe donc un besoin pour une vanne à orifice variable qui soit moins sujette à l’obturation, notamment due à la chute de débris et au grippage par la présence de particules solides dans le fluide procédé qui la traverse. De même, il est nécessaire d’améliorer la réorientation du fluide en sortie de vanne pour empêcher, ou tout au moins limiter, la dégradation de la canalisation en aval d’un tel dispositif. There is therefore a need for a variable orifice valve which is less prone to plugging, in particular due to falling debris and seizing by the presence of solid particles in the process fluid passing through it. Likewise, it is necessary to improve the reorientation of the fluid at the valve outlet to prevent, or at least limit, the degradation of the pipeline downstream of such a device.
A cet effet, un premier objet de l’invention concerne une vanne à orifice variable pour contrôler le débit d'un mélange de solides et de fluides tel que celui présent dans un équipement de traitement du pétrole, comprenant : To this end, a first object of the invention relates to a variable orifice valve for controlling the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment, comprising:
- un conduit tubulaire, - une première plaque plane s’étendant transversalement au conduit et solidaire de celui-ci, cette première plaque plane étant percée d’un orifice central et d’une pluralité d’orifices périphériques disposés de manière circonférentielle autour de l’orifice central, - a tubular duct, a first flat plate extending transversely to the duct and integral with the latter, this first flat plate being pierced with a central orifice and a plurality of peripheral orifices disposed circumferentially around the central orifice,
- une deuxième plaque plane s’étendant transversalement au conduit et montée mobile en rotation à l’intérieur de celui-ci, notamment par rapport à un axe X du conduit tubulaire, la deuxième plaque ayant une pluralité d'orifices dont au moins la forme et l'espacement, éventuellement également la taille, correspondent à ceux des orifices de la première plaque, a second flat plate extending transversely to the duct and mounted so as to be able to rotate inside the latter, in particular relative to an axis X of the tubular duct, the second plate having a plurality of orifices, at least of which has the shape and the spacing, possibly also the size, correspond to those of the orifices of the first plate,
- au moins un élément de support supportant la deuxième plaque de manière pivotante par rapport à la première plaque, - at least one support element supporting the second plate in a pivoting manner relative to the first plate,
- un système de réglage venant en prise avec la deuxième plaque pour régler les positions relatives des orifices périphériques des première et deuxième plaques par rotation de la deuxième plaque, notamment suivant un axe perpendiculaire aux plaques. an adjustment system engaging the second plate to adjust the relative positions of the peripheral orifices of the first and second plates by rotating the second plate, in particular along an axis perpendicular to the plates.
Selon l’invention, chaque orifice périphérique de la première plaque est entouré d’une cheminée solidaire de la première plaque et faisant saillie d’une face de celle-ci située du côté opposé à la deuxième plaque. According to the invention, each peripheral orifice of the first plate is surrounded by a chimney integral with the first plate and projecting from one side thereof located on the side opposite the second plate.
Ceci permet de limiter l’obturation des orifices surmontés d’une cheminée par des débris tombant sur la première plaque à orifices. En effet, ces débris rebondissent sur ou sont déviés par le bord de la cheminée et tombent sur la première plaque entre les cheminées. This makes it possible to limit the blockage of the orifices surmounted by a chimney by debris falling on the first orifice plate. Indeed, this debris bounces off or is deflected by the edge of the chimney and falls on the first plate between the chimneys.
La vanne de la présente invention est généralement utilisée pour contrôler le débit d'un mélange de solides et de fluides tel que celui présent dans un équipement de traitement du pétrole. De tels fluides peuvent conduire à une érosion importante de la vanne ou de la canalisation dans laquelle elle est placée, notamment en cas de défaut d’alignement des orifices, tel qu’expliqué plus haut.The valve of the present invention is generally used to control the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment. Such fluids can lead to significant erosion of the valve or of the pipe in which it is placed, especially in the event of misalignment of the orifices, as explained above.
Afin de limiter l’érosion de la vanne ou de la canalisation induite par une déviation du fluide en sortie de la seconde plaque, chaque orifice périphérique de la deuxième plaque peut être entouré d’une cheminée solidaire de la deuxième plaque et faisant saillie d’une face de celle-ci située du côté opposé à la première plaque. Ainsi, un flux arrivant du côté de la première plaque et sortant du côté de la deuxième plaque est guidé par les cheminées solidaires de cette dernière, ce qui permet de redresser sa direction, notamment de le guider suivant une direction perpendiculaire à la direction de la deuxième plaque. Ces cheminées de guidage sont ainsi avantageusement conçues pour guider un flux en sortant dans une direction prédéterminée, de préférence parallèle à un axe du conduit tubulaire de la vanne. In order to limit the erosion of the valve or of the pipe induced by a deflection of the fluid leaving the second plate, each peripheral orifice of the second plate can be surrounded by a chimney integral with the second plate and projecting from one face thereof located on the side opposite to the first plate. Thus, a flow arriving from the side of the first plate and leaving the side of the second plate is guided by the chimneys integral with the latter, this which makes it possible to straighten out its direction, in particular to guide it in a direction perpendicular to the direction of the second plate. These guide ducts are thus advantageously designed to guide a flow leaving in a predetermined direction, preferably parallel to an axis of the tubular duct of the valve.
Idéalement, pour assurer un redressage efficace du fluide, la hauteur des cheminées peut avantageusement être supérieure ou égale à trois fois le diamètre interne de passage des orifices qu’elles entourent, et de préférence supérieur ou égal à 5 fois le diamètre interne de passage. Ideally, to ensure effective straightening of the fluid, the height of the chimneys can advantageously be greater than or equal to three times the internal passage diameter of the orifices which they surround, and preferably greater than or equal to 5 times the internal passage diameter.
La vanne selon l’invention peut présenter une ou plusieurs des caractéristiques suivantes : The valve according to the invention may have one or more of the following characteristics:
- chaque cheminée peut être formée d’une paroi dont la surface interne s’étend dans le prolongement d’une surface interne de l’orifice qu’elle entoure. Avantageusement, chaque cheminée peut présenter une section interne de même forme et de même dimension que la forme et la dimension de la section interne de l’orifice qu’elle entoure. - Each chimney can be formed from a wall, the internal surface of which extends in the extension of an internal surface of the orifice it surrounds. Advantageously, each chimney can have an internal section of the same shape and of the same size as the shape and size of the internal section of the orifice it surrounds.
- Chaque cheminée peut être formée d’une paroi dont au moins la surface interne s’étend perpendiculairement à la plaque à laquelle elle est solidarisée. - Each chimney can be formed from a wall, at least the internal surface of which extends perpendicularly to the plate to which it is secured.
- Pour une réalisation simple, chaque cheminée peut être réalisée d’un seul tenant avec la plaque à laquelle elle est solidarisée. - For a simple realization, each chimney can be made in one piece with the plate to which it is attached.
- Chaque cheminée peut s’étendre sur une hauteur égale à au moins trois fois le diamètre interne de passage de l’orifice périphérique à laquelle elle est solidarisée suivant une direction perpendiculaire à celle-ci. - Each chimney can extend over a height equal to at least three times the internal passage diameter of the peripheral orifice to which it is secured in a direction perpendicular thereto.
- Chaque cheminée solidaire de la deuxième plaque peut s’étendre sur une hauteur égale à au moins cinq fois le diamètre interne de l’orifice périphérique auquel elle est solidarisée, suivant une direction perpendiculaire à celle-ci. - Each chimney secured to the second plate can extend over a height equal to at least five times the internal diameter of the peripheral orifice to which it is secured, in a direction perpendicular thereto.
- La première plaque peut être pourvue, du côté de sa face dirigée vers la deuxième plaque, d’au moins un éléments d’étanchéité entourant un orifice périphérique de la première plaque, chaque élément d’étanchéité présentant un premier bord solidaire de la première plaque et un deuxième bord libre opposé en contact glissant avec la deuxième plaque, notamment avec sa face en regard de la première plaque. Ceci peut permettre de limiter le passage de particules solides entre les deux plaques. Avantageusement, une surface interne d’élément d’étanchéité la plus proche de l’orifice périphérique entouré s’étend dans le prolongement d’une surface interne de l’orifice entouré, de préférence perpendiculairement à la première plaque. Avantageusement, une surface externe d’élément d’étanchéité la plus éloignée de l’orifice périphérique entouré présente une forme évasée en direction de la deuxième plaque.- The first plate can be provided, on the side of its face directed towards the second plate, with at least one sealing elements surrounding a peripheral orifice of the first plate, each sealing element having a first edge integral with the first plate and a second opposite free edge in sliding contact with the second plate, in particular with its face facing the first plate. This can make it possible to limit the passage of solid particles between the two plates. Advantageously, an internal surface of a sealing element closest to the surrounded peripheral orifice extends in the extension of an internal surface of the surrounded orifice, preferably perpendicular to the first plate. Advantageously, an outer surface of the sealing element furthest from the surrounded peripheral orifice has a flared shape in the direction of the second plate.
- Un élément de support peut être un support tubulaire solidaire de la première plaque et relier de manière étanche aux fluides l’orifice central de la première plaque à l’orifice central de la deuxième plaque. Le support tubulaire permet ainsi le passage du fluide au travers des plaques sans accès à l’espace inter-plaque. Cet agencement permet d’éviter aux particules solides de petite taille éventuellement présentes dans le fluide transporté d’accéder à l’espace inter-plaque et de gripper la rotation de la deuxième plaque. - A support element may be a tubular support integral with the first plate and connect in a fluid-tight manner the central orifice of the first plate to the central orifice of the second plate. The tubular support thus allows the passage of fluid through the plates without access to the inter-plate space. This arrangement prevents small solid particles possibly present in the transported fluid from entering the inter-plate space and jamming the rotation of the second plate.
- les orifices périphériques de chaque plaque peuvent être de dimension inférieure aux orifices centraux. - the peripheral orifices of each plate may be of a smaller dimension than the central orifices.
- les orifices périphériques peuvent être disposés à équidistance les uns des autres et/ou de l’orifice central de la plaque dont ils font partie. - the peripheral orifices can be arranged equidistant from each other and / or from the central orifice of the plate of which they are part.
L’invention concerne également une canalisation verticale ou sensiblement verticale destinée à recevoir un fluide en circulation suivant une direction d’écoulement du haut vers le bas, comprenant une vanne selon l’invention, disposée de sorte que le fluide entre par les orifices de la première plaque et sorte par les orifices de la deuxième plaque. The invention also relates to a vertical or substantially vertical pipe intended to receive a fluid circulating in a direction of flow from top to bottom, comprising a valve according to the invention, arranged so that the fluid enters through the orifices of the first plate and exits through the holes in the second plate.
Autrement dit, l’invention concerne également l’utilisation d’une vanne selon l’invention dans une canalisation s’étendant verticalement ou sensiblement verticalement. In other words, the invention also relates to the use of a valve according to the invention in a pipe extending vertically or substantially vertically.
Par direction sensiblement verticale, on entend une direction s’écartant d’une direction verticale d’au plus 20°, voire d’au plus 10°. By substantially vertical direction is meant a direction deviating from a vertical direction by at most 20 °, or even by at most 10 °.
L'invention est maintenant décrite en référence aux dessins annexés, non limitatifs, dans lesquels : The invention is now described with reference to the accompanying drawings, which are not limiting, in which:
[Fig. 1] La figure 1 représente schématiquement une vue en coupe longitudinale d’une vanne selon un mode de réalisation de l’invention. [Fig. 1] Figure 1 schematically shows a longitudinal sectional view of a valve according to one embodiment of the invention.
[Fig. 2] La figure 2 représente schématiquement une vue de dessus de la vanne de la figure 1 . [Fig. 2] Figure 2 schematically shows a top view of the valve of Figure 1.
[Fig. 3] La figure 3 représente une vue en perspective des deux plaques à orifices assemblées d’une vanne selon un mode de réalisation de l’invention. [Fig. 4] La figure 4 représente une vue en perspective de dessous de la deuxième plaque à orifices de la figure 3. [Fig. 3] FIG. 3 represents a perspective view of the two assembled orifice plates of a valve according to one embodiment of the invention. [Fig. 4] Figure 4 shows a perspective view from below of the second orifice plate of Figure 3.
[Fig. 5] La figure 5 représente une vue en perspective de dessus de la première plaque à orifices de la figure 3. [Fig. 5] Figure 5 shows a perspective view from above of the first orifice plate of Figure 3.
[Fig. 6] La figure 6 représente une vue en perspective de deux plaques à orifices superposées d’une vanne selon un autre mode de réalisation de l’invention.[Fig. 6] Figure 6 shows a perspective view of two superimposed orifice plates of a valve according to another embodiment of the invention.
[Fig. 7] La figure 7 représente une vue en coupe axiale d’un élément d’étanchéité selon un mode de réalisation. [Fig. 7] Figure 7 shows an axial sectional view of a sealing element according to one embodiment.
[Fig. 8] La figure 8 représente une vue en coupe axiale d’éléments d’étanchéité selon un autre mode de réalisation. [Fig. 8] Figure 8 shows an axial sectional view of sealing elements according to another embodiment.
La figure 1 représente une vanne à orifice variable 10 destinée à être utilisée pour contrôler le débit d’un mélange de solides et de fluides tel que celui présent dans un équipement de traitement du pétrole. Figure 1 shows a variable orifice valve 10 for use in controlling the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment.
La vanne 10 comprend un conduit tubulaire 12 d’axe X destiné à être raccordé à une canalisation 1 dans laquelle la vanne doit être disposée. À cet effet, il présente par exemple deux collerettes 12a, 12b à ses extrémités pouvant être assemblées à des collerettes similaires de la canalisation 1. Alternativement, le conduit tubulaire 12 pourra être soudé bout à bout avec la canalisation principale dans laquelle la vanne sera placée. Les fluides circulent au travers de la vanne 10 suivant une direction parallèle à l’axe X du conduit 12, généralement de haut en bas tel que représenté symboliquement par la flèche F sur la figure 1. Généralement, ce type de conduit tubulaire 12 est de forme cylindrique. The valve 10 comprises a tubular conduit 12 of axis X intended to be connected to a pipe 1 in which the valve must be placed. To this end, it has for example two flanges 12a, 12b at its ends which can be assembled to similar flanges of the pipe 1. Alternatively, the tubular duct 12 can be welded end to end with the main pipe in which the valve will be placed. . The fluids circulate through the valve 10 in a direction parallel to the X axis of the duct 12, generally from top to bottom as represented symbolically by the arrow F in FIG. 1. Generally, this type of tubular duct 12 is of cylindrical shape.
La vanne 10 comporte également une première plaque plane 14 et une deuxième plaque plane 16 qui s’étendent transversalement au conduit 12, c’est-à-dire perpendiculairement à l’axe X du conduit 12, à l’intérieur de celui-ci. La deuxième plaque 16 est montée mobile en rotation autour de l’axe X du conduit 12. Le plus souvent, ces deux plaques sont de mêmes formes et dimensions. The valve 10 also comprises a first flat plate 14 and a second flat plate 16 which extend transversely to the duct 12, that is to say perpendicular to the axis X of the duct 12, inside the latter. . The second plate 16 is mounted so as to be able to rotate around the X axis of the duct 12. Most often, these two plates are of the same shape and size.
Chaque plaque 14, 16 est percée d’un orifice central 141 , 161 , respectivement, et d’une pluralité d’orifices périphériques 143, 163, respectivement, disposés de manière circonférentielle autour de l’orifice central 141 , 161. Les différents orifices de chacune des première et deuxième plaques correspondent au moins en forme et en espacement, de préférence en taille, en forme et en espacement, de sorte que lorsque les deux plaques 14, 16 sont positionnées l’une au-dessus de l’autre, les centres de leur orifice central coïncident et une rotation des deux plaques par rapport à un axe passant par ces centres permet une superposition plus ou moins importante des orifices périphériques tels que représenté sur la figure 2. Autrement dit, les positions et formes, avantageusement aussi la taille, des différents orifices de chacune des première et deuxième plaques sont telles que ces orifices correspondent, à savoir sont alignés suivant une position perpendiculaire aux plaques, dans au moins une position relative de celles-ci. Ainsi, le réglage de la position relative des deux plaques par rotation autour de l’axe X passant par les centres des orifices centraux 141 , 161 , permet de moduler, de régler, la section de passage des fluides au travers des orifices périphériques 143, 163. Each plate 14, 16 is pierced with a central orifice 141, 161, respectively, and a plurality of peripheral orifices 143, 163, respectively, disposed circumferentially around the central orifice 141, 161. The various orifices of each of the first and second plates correspond at least in shape and spacing, preferably in size, shape and spacing, so that when the two plates 14, 16 are positioned one above the other, the centers of their central orifice coincide and a rotation of the two plates with respect to an axis passing through these centers allows a superposition greater or lesser of the peripheral orifices as shown in FIG. 2. In other words, the positions and shapes, advantageously also the size, of the various orifices of each of the first and second plates are such that these orifices correspond, namely are aligned according to a position perpendicular to the plates, in at least one relative position thereof. Thus, the adjustment of the relative position of the two plates by rotation around the axis X passing through the centers of the central orifices 141, 161, makes it possible to modulate, to adjust, the section of passage of the fluids through the peripheral orifices 143, 163.
Dans l’exemple, les orifices périphériques sont de plus petite dimension que les orifices centraux. Les orifices périphériques sont de préférence disposés à équidistance les uns des autres et de l’orifice central qu’ils entourent. In the example, the peripheral orifices are smaller in size than the central orifices. The peripheral orifices are preferably arranged equidistant from each other and from the central orifice which they surround.
Au moins un élément de support supporte la deuxième plaque 16 de manière pivotante par rapport à la première plaque 14. At least one support member supports second plate 16 pivotally relative to first plate 14.
On peut ainsi prévoir un élément de support 17 solidaire de la paroi interne du conduit 12 et s’étendant sur toute la périphérie de ce dernier, cet élément de support 17 définissant une surface annulaire sur laquelle peut reposer la deuxième plaque 16 (figure 1 ). A noter que plusieurs éléments de support 17 solidaires de la paroi interne du conduit 12 peuvent être prévus. It is thus possible to provide a support element 17 integral with the internal wall of the duct 12 and extending over the entire periphery of the latter, this support element 17 defining an annular surface on which the second plate 16 can rest (FIG. 1). . Note that several support elements 17 integral with the internal wall of the duct 12 can be provided.
On peut également prévoir, en plus du ou des éléments de support 17 ou à la place de ceux-ci, un élément de support de forme tubulaire 18 solidaire de la première plaque 14 et qui relie de manière étanche aux fluides l’orifice central 141 de la première plaque à l’orifice central 161 de la deuxième plaque, tel que représenté dans l’exemple, afin d’éviter aux particules solides contenues dans le fluide traversant la vanne d’accéder à l’interstice entre les deux plaques par l’orifice central. It is also possible to provide, in addition to or instead of the support element or elements 17, a tubular-shaped support element 18 integral with the first plate 14 and which connects the central orifice 141 in a fluid-tight manner. from the first plate to the central orifice 161 of the second plate, as shown in the example, in order to prevent solid particles contained in the fluid passing through the valve from accessing the gap between the two plates through the central orifice.
Ce support tubulaire 18 peut être fixé de manière étanche à la première plaque 14 par tous moyens appropriés, par exemple par soudage si les deux pièces sont métalliques, ou par rivetage, vissage, etc. This tubular support 18 can be fixed in a sealed manner to the first plate 14 by any suitable means, for example by welding if the two parts are metallic, or by riveting, screwing, etc.
Dans l’exemple, le support tubulaire 18 présente une collerette supérieure 18a reposant sur la face 14a de la première plaque 14 et soudée à cette dernière (fig. 1 ). Le support tubulaire 18 présente à son autre extrémité une collerette inférieure 18b retenant la deuxième plaque 16 qui est ainsi montée pivotante sur le support tubulaire 18. L’invention n’est bien entendu pas limitée à cet agencement, le support tubulaire 18 pouvant par exemple être fixé à la face 14b de la première plaque autour de son orifice central. Le support tubulaire 18 peut encore être réalisé d’une pièce avec la première plaque, par exemple dans le prolongement de son orifice central et traverser la deuxième plaque. La deuxième plaque peut être montée à rotation sur le support tubulaire au moyen de tout autre moyen ou support autorisant la rotation (palier, patte de support, ...). In the example, the tubular support 18 has an upper flange 18a resting on the face 14a of the first plate 14 and welded to the latter (FIG. 1). The tubular support 18 has at its other end a lower flange 18b retaining the second plate 16 which is thus pivotally mounted on the support. tubular 18. The invention is of course not limited to this arrangement, the tubular support 18 for example being able to be fixed to the face 14b of the first plate around its central orifice. The tubular support 18 can also be made in one piece with the first plate, for example in the extension of its central orifice and pass through the second plate. The second plate can be rotatably mounted on the tubular support by means of any other means or support allowing rotation (bearing, support bracket, etc.).
La vanne 10 comprend en outre un système de réglage 20 venant en prise avec la deuxième plaque 16 pour régler les positions relatives des orifices périphériques 143, 163 des première et deuxième plaques par rotation de la deuxième plaque, ici autour de l’axe X du conduit 12. The valve 10 further comprises an adjustment system 20 coming into engagement with the second plate 16 to adjust the relative positions of the peripheral orifices 143, 163 of the first and second plates by rotation of the second plate, here around the X axis of the valve. led 12.
Dans l’exemple représenté sur les figures 1, 2 et 6, ce système de réglage 20 comprend un secteur denté 201 solidaire de la périphérie de la deuxième plaque 16 venant en prise avec les dents d’une crémaillère 202 montée coulissante en translation suivant la direction de la flèche F1 de la figure 2. Le déplacement de cette crémaillère peut être commandé par un organe de déplacement 203 tel qu’un moteur pas à pas, un système de vérins hydrauliques ou tout autre organe approprié. Dans l’exemple des figures 2 et 6, le secteur denté 201 fait saillie de la périphérie de la deuxième plaque 16. Ce secteur denté peut ne pas faire saillie de la périphérie de la deuxième plaque 16, comme dans l’exemple de la figure 4, où les secteurs dentés 201 sont solidaires de la face 16b de la deuxième plaque. Dans les variantes représentées sur les figures 3 et 4, un ou deux secteurs dentés 201 sont solidaires de la face 16b de la deuxième plaque. Les deux secteurs dentés 201 peuvent alors être disposés en des emplacements diamétralement opposés de la deuxième plaque tel que représenté figure 4. L’invention n’est bien entendu pas limitée à une forme particulière du système de réglage, pourvu qu’il permette de faire pivoter la deuxième plaque par rapport à la première plaque. In the example shown in Figures 1, 2 and 6, this adjustment system 20 comprises a toothed sector 201 integral with the periphery of the second plate 16 coming into engagement with the teeth of a rack 202 mounted to slide in translation along the line. direction of arrow F1 in FIG. 2. The movement of this rack can be controlled by a movement member 203 such as a stepping motor, a system of hydraulic jacks or any other suitable member. In the example of FIGS. 2 and 6, the toothed sector 201 protrudes from the periphery of the second plate 16. This toothed sector may not project from the periphery of the second plate 16, as in the example of FIG. 4, where the toothed sectors 201 are integral with the face 16b of the second plate. In the variants shown in Figures 3 and 4, one or two toothed sectors 201 are integral with the face 16b of the second plate. The two toothed sectors 201 can then be arranged in diametrically opposed locations of the second plate as shown in FIG. 4. The invention is of course not limited to a particular form of the adjustment system, provided that it makes it possible to do so. rotate the second plate relative to the first plate.
Selon l’invention, chaque orifice périphérique 143 de la première plaque 14 est entouré d’une cheminée 145 solidaire de la première plaque 14 et faisant saillie d’une face 14a de celle-ci située du côté opposé à la deuxième plaque 16. Dans l’exemple, chaque cheminée 145 est réalisée d’un seul tenant avec la plaque 14. On notera en outre, que chaque cheminée 145 est formée d’une paroi qui présente une section interne de même forme et de même dimension que la forme et la dimension de la section interne de l’orifice périphérique 143 qu’elle entoure. Ces sections internes sont ici des sections suivant des plans perpendiculaires à l’axe X du conduit. Autrement dit, la surface interne 145a de chaque cheminée 145 s’étend dans le prolongement (la continuité) d’une surface interne de l’orifice périphérique 143. Ceci permet d’éviter d’induire une perturbation supplémentaire du flux du fluide traversant la vanne et d’éviter une érosion par les particules solides contenues dans le fluide au niveau de la jonction entre l’orifice et la cheminée associée. According to the invention, each peripheral orifice 143 of the first plate 14 is surrounded by a chimney 145 integral with the first plate 14 and projecting from a face 14a thereof situated on the side opposite to the second plate 16. In For example, each chimney 145 is made in one piece with the plate 14. It will also be noted that each chimney 145 is formed of a wall which has an internal section of the same shape and of the same dimension as the shape and the dimension of the internal section of the peripheral orifice 143 which it surrounds. These internal sections are here sections along planes perpendicular to the X axis of the duct. In other words, the internal surface 145a of each chimney 145 extends in the extension (the continuity) of an internal surface of the peripheral orifice 143. This makes it possible to avoid inducing an additional disturbance of the flow of the fluid passing through the. valve and avoid erosion by solid particles contained in the fluid at the junction between the orifice and the associated chimney.
Chaque cheminée 145 s’étend ici suivant une direction perpendiculaire à la première plaque 14, autrement dit parallèle à l’axe X du conduit 12, sur une hauteur prédéterminée. Cette hauteur est par exemple d’au moins trois fois le diamètre interne de passage des orifices périphériques et avantageusement au plus égale à la distance séparant une extrémité du conduit 12 (correspondant dans l’exemple à la collerette 12a) de la face 14a de la première plaque 14. Lorsque ces orifices ne sont pas cylindriques, la hauteur des cheminées peut être déterminée à partir d’un diamètre interne fictif calculé pour une section interne de passage circulaire fictive de même surface que la surface de la section interne de passage de l’orifice. Each chimney 145 here extends in a direction perpendicular to the first plate 14, in other words parallel to the X axis of the duct 12, over a predetermined height. This height is for example at least three times the internal diameter of the passage of the peripheral orifices and advantageously at most equal to the distance separating one end of the duct 12 (corresponding in the example to the flange 12a) from the face 14a of the first plate 14. When these orifices are not cylindrical, the height of the chimneys can be determined from a fictitious internal diameter calculated for a fictitious circular internal passage section of the same area as the surface of the internal passage section of the 'orifice.
L’invention n’est bien entendu pas limitée à l’exemple représenté, notamment chaque cheminée 145 pourrait être fixée à la première plaque par tous moyens appropriés, par exemple par soudage, vissage, rivets. En outre, la surface interne 145a de chaque cheminée s’étend ici parallèlement à l’axe X du conduit 12. Bien que cette configuration soit préférable, notamment pour ne pas perturber le flux traversant les orifices périphériques, des configurations dans laquelle les cheminées présentent une forme évasée, par exemple conique, sont envisageables. Des cheminées présentant une section transversale interne parallélépipédique sont également acceptables bien que non préférées. The invention is of course not limited to the example shown, in particular each chimney 145 could be fixed to the first plate by any appropriate means, for example by welding, screwing, rivets. In addition, the internal surface 145a of each chimney here extends parallel to the X axis of the duct 12. Although this configuration is preferable, in particular so as not to disturb the flow passing through the peripheral orifices, configurations in which the chimneys have a flared shape, for example conical, are possible. Chimneys having a parallelepipedal internal cross section are also acceptable although not preferred.
Dans l’exemple représenté, chaque orifice périphérique 163 de la deuxième plaque à orifices 16 est également entouré d’une cheminée 165 solidaire de la deuxième plaque à orifices et faisant saillie d’une face 16b de celle-ci située du côté opposé à la première plaque à orifices 14. In the example shown, each peripheral orifice 163 of the second orifice plate 16 is also surrounded by a chimney 165 integral with the second orifice plate and projecting from a face 16b thereof situated on the side opposite to the first orifice plate 14.
Comme pour la première plaque 14, dans l’exemple, chaque cheminée 165 est réalisée d’un seul tenant avec la plaque 16. Chaque cheminée 165 présente aussi une section interne de même forme et de même dimension que la forme et la dimension de la section interne de l’orifice périphérique 163 qu’elle entoure. Autrement dit, la surface interne 165a de chaque cheminée 165 s’étend dans le prolongement (la continuité) de la surface interne de l’orifice périphérique 163. Chaque cheminée 165 s’étend ici aussi suivant une direction perpendiculaire à la deuxième plaque 16, autrement dit parallèle à l’axe X du conduit 12, sur une hauteur prédéterminée. Cette hauteur est par exemple d’au moins trois fois le diamètre interne de passage des orifices périphériques, préférablement d’au moins cinq fois le diamètre de passage des orifices périphériques et avantageusement au plus égale à la distance séparant une extrémité du conduit 12 (correspondant dans l’exemple à la collerette 12b) de la face 16b de la deuxième plaque 16. Lorsque ces orifices ne sont pas cylindriques, la hauteur des cheminées peut être déterminée à partir d’un diamètre interne fictif tel que précédemment défini. As for the first plate 14, in the example, each chimney 165 is made in one piece with the plate 16. Each chimney 165 also has an internal section of the same shape and of the same dimension as the shape and dimension of the tube. internal section of the peripheral orifice 163 which it surrounds. In other words, the internal surface 165a of each chimney 165 extends into the extension (continuity) of the internal surface of the peripheral orifice 163. Each chimney 165 here also extends in a direction perpendicular to the second plate 16, in other words parallel to the X axis of the duct 12, over a predetermined height . This height is for example at least three times the internal diameter of the passage of the peripheral orifices, preferably at least five times the diameter of the passage of the peripheral orifices and advantageously at most equal to the distance separating one end of the duct 12 (corresponding to in the example with the flange 12b) of the face 16b of the second plate 16. When these orifices are not cylindrical, the height of the chimneys can be determined from a fictitious internal diameter as defined above.
De manière similaire, l’invention n’est pas limitée à l’exemple représenté, notamment chaque cheminée 165 pourrait être fixée à la deuxième plaque par tous moyens appropriés, par exemple par soudage, vissage, rivets. En outre, la paroi interne 165a de chaque cheminée s’étend ici parallèlement à l’axe X du conduit 12. Bien que cette configuration soit préférable, notamment pour ne pas perturber le flux traversant les orifices périphériques, des configurations dans laquelle les cheminées présentent une forme évasée, par exemple conique, sont envisageables. Il est toutefois préférable que la paroi interne 165a des cheminées 165 soient orientée de manière à diriger un flux passant par ses cheminées parallèlement à l’axe X, avec éventuellement une tolérance d’écartement à cet axe d’au plus 5°. Similarly, the invention is not limited to the example shown, in particular each chimney 165 could be fixed to the second plate by any suitable means, for example by welding, screwing, rivets. In addition, the internal wall 165a of each chimney here extends parallel to the X axis of the duct 12. Although this configuration is preferable, in particular so as not to disturb the flow passing through the peripheral orifices, configurations in which the chimneys have a flared shape, for example conical, are possible. However, it is preferable that the internal wall 165a of the chimneys 165 are oriented so as to direct a flow passing through its chimneys parallel to the X axis, possibly with a clearance tolerance to this axis of at most 5 °.
Dans l’exemple représenté, la première plaque 14 est en outre pourvue, du côté de sa face 14b dirigée vers la deuxième plaque 16, d’une pluralité d’éléments d’étanchéité 22-25 entourant chacun des orifices périphériques 143 de la première plaque 14. Ces éléments d’étanchéité 22-25 permettent d’assurer l’étanchéité entre les deux plaques, au droit des orifices périphériques de la vanne. In the example shown, the first plate 14 is further provided, on the side of its face 14b directed towards the second plate 16, with a plurality of sealing elements 22-25 surrounding each of the peripheral orifices 143 of the first plate 14. These sealing elements 22-25 make it possible to ensure the sealing between the two plates, in line with the peripheral orifices of the valve.
Ces éléments d’étanchéité 22-25 sont avantageusement métalliques. These sealing elements 22-25 are advantageously metallic.
Un ou plusieurs éléments d’étanchéité peuvent entourer chaque orifice périphérique. Dans l’exemple, un unique élément d’étanchéité 22 (fig.1 , 7) ou trois éléments d’étanchéité 23, 24, 25 (fig. 8) peuvent être prévus. One or more sealing elements may surround each peripheral orifice. In the example, a single sealing element 22 (Fig. 1, 7) or three sealing elements 23, 24, 25 (Fig. 8) can be provided.
Chaque élément d’étanchéité 22, 23, 24, 25 présente un premier bord 22a, 23a, 24a, 25a solidaire de la première plaque 14 (de la face 14b de celle-ci) et un deuxième bord libre 22b, 23b, 24b, 25b opposé en contact glissant avec la deuxième plaque 16. Un tel contact glissant est défini de manière à ne pas autoriser le passage dans l’espace inter-plaques des particules éventuellement présentes dans le fluide et à autoriser un glissement du ou des éléments d’étanchéité sur la deuxième plaque. Ainsi, lorsque la deuxième plaque pivote par rapport à la première plaque, ces éléments d’étanchéité 22-25 raclent la face 16a de la deuxième plaque située en regard de la première plaque 14 ce qui permet d’éviter que des particules tombées sur cette face 16a, par exemple lorsque les orifices périphériques des deux plaques ne coïncident pas exactement, ne se glissent entre les plaques 14, 16. Each sealing element 22, 23, 24, 25 has a first edge 22a, 23a, 24a, 25a integral with the first plate 14 (of the face 14b thereof) and a second free edge 22b, 23b, 24b, 25b opposite in sliding contact with the second plate 16. Such a sliding contact is defined so as not to allow the passage in the inter-plate space of particles possibly present in the fluid and to allow sliding of the sealing element (s) on the second plate. Thus, when the second plate pivots relative to the first plate, these sealing elements 22-25 scrape the face 16a of the second plate located opposite the first plate 14 which makes it possible to prevent particles falling on this face 16a, for example when the peripheral orifices of the two plates do not coincide exactly, do not slip between the plates 14, 16.
Lorsqu’un seul élément d’étanchéité 22 est prévu, sa surface interne 22c s’étend dans le prolongement (la continuité) de la surface interne de l’orifice 143 entouré, de préférence perpendiculairement aux plaques. Ici, cette surface interne 22c présente une section transversale interne de même forme et dimension que la section interne de l’orifice périphérique autour duquel l’élément d’étanchéité est disposé. La surface externe 22d est alors de préférence de forme évasée, ici tronconique, en direction de la deuxième plaque. When a single sealing element 22 is provided, its internal surface 22c extends in the continuation (continuity) of the internal surface of the surrounded orifice 143, preferably perpendicular to the plates. Here, this internal surface 22c has an internal cross section of the same shape and dimension as the internal section of the peripheral orifice around which the sealing element is arranged. The outer surface 22d is then preferably of flared shape, here frustoconical, in the direction of the second plate.
Lorsque plusieurs éléments d’étanchéités 23, 24, 25 sont prévus, l’élément d’étanchéité 23 le plus proche de l’orifice périphérique entouré comprend une surface interne 23c s’étendant dans le prolongement (la continuité) de la surface interne de l’orifice entouré, de préférence perpendiculairement aux plaques. Ici, cette surface interne 23c présente une section transversale interne de même forme et dimension que la section interne de l’orifice périphérique autour duquel l’élément d’étanchéité est disposé. La surface externe 23d de l’élément d’étanchéité 23 peut alors être de forme similaire à celle de la surface interne 23c. When several sealing elements 23, 24, 25 are provided, the sealing element 23 closest to the surrounded peripheral orifice comprises an internal surface 23c extending in the extension (continuity) of the internal surface of the the orifice surrounded, preferably perpendicular to the plates. Here, this internal surface 23c has an internal cross section of the same shape and dimension as the internal section of the peripheral orifice around which the sealing element is arranged. The outer surface 23d of the sealing element 23 can then be similar in shape to that of the inner surface 23c.
L’élément d’étanchéité 25 le plus éloigné de l’orifice périphérique peut alors présenter une surface externe 25d de forme évasée en direction de la deuxième plaque. Sa surface interne 25c est ici de forme similaire à celle de la surface interne 23c et de la surface externe 23d. The sealing element 25 furthest from the peripheral orifice can then have an outer surface 25d of flared shape towards the second plate. Its internal surface 25c is here similar in shape to that of the internal surface 23c and of the external surface 23d.
On peut prévoir uniquement les deux éléments d’étanchéité 23 et 25 précédemment décrit ou prévoir un ou plusieurs éléments d’étanchéité intermédiaires (un seul 24 dans l’exemple), de forme similaire à l’élément d’étanchéité le plus proche de l’orifice périphérique. La géométrie du ou des éléments d’étanchéité 22-25 n’est toutefois pas limitée à ces exemples. Notamment, la surface externe d’élément d’étanchéité la plus éloignée de l’orifice périphérique peut être perpendiculaire à la première plaque.One can provide only the two sealing elements 23 and 25 described above or provide one or more intermediate sealing elements (only one 24 in the example), similar in shape to the sealing element closest to the peripheral orifice. The geometry of the sealing element (s) 22-25 is however not limited to these examples. In particular, the outer surface of the sealing element furthest from the peripheral orifice may be perpendicular to the first plate.
On notera que dans l’exemple représenté les orifices périphériques des première et deuxième plaques sont tous de forme cylindrique. L’invention n’est toutefois pas limitée à une forme particulière d’orifices périphériques lesquels peuvent présenter une forme oblongue, polygonale, par exemple un quadrilatère (forme rectangulaire, trapézoïdale), en arc de cercle ou autre. De manière similaire, la forme des orifices centraux peut présenter une autre forme que cylindrique. La vanne selon l’invention est particulièrement adaptée pour être utilisée dans une unité de raffinerie telle qu’une unité de craquage catalytique. Ce type de vanne est alors disposé dans des canalisations de diamètre conséquent (de l’ordre de 1 mètre). Les différents éléments de la vanne sont alors en acier, de préférence en acier inoxydable, et éventuellement recouverts d’un revêtement de protection contre l’érosion. Le nombre d’orifices périphériques dépend des dimensions de la vanne et du débit de fluide considéré. Pour l’utilisation précitée, on peut envisager jusqu’à 10 ou 12 orifices. Note that in the example shown the peripheral orifices of the first and second plates are all cylindrical in shape. However, the invention is not limited to a particular form of peripheral orifices which may have an oblong, polygonal shape, for example a quadrilateral (rectangular, trapezoidal shape), an arc of a circle or the like. Similarly, the shape of the central orifices may have a shape other than cylindrical. The valve according to the invention is particularly suitable for use in a refinery unit such as a catalytic cracking unit. This type of valve is then placed in pipes of large diameter (of the order of 1 meter). The various elements of the valve are then made of steel, preferably stainless steel, and possibly covered with a protective coating against erosion. The number of peripheral orifices depends on the dimensions of the valve and the fluid flow rate considered. For the aforementioned use, up to 10 or 12 orifices can be envisaged.
La vanne selon l’invention pourrait également être utilisée dans toute application dans laquelle des débris entraînés par les fluides sont susceptibles de boucher les orifices à section variable (orifices périphériques). The valve according to the invention could also be used in any application in which debris entrained by the fluids are liable to block the orifices of variable section (peripheral orifices).

Claims

REVENDICATIONS
1. Vanne à orifice variable (10) pour contrôler le débit d'un mélange de solides et de fluides tel que celui présent dans un équipement de traitement du pétrole, comprenant : 1. Variable orifice valve (10) for controlling the flow rate of a mixture of solids and fluids such as that present in petroleum processing equipment, comprising:
- un conduit tubulaire (12), - a tubular duct (12),
- une première plaque plane (14) s’étendant transversalement au conduit (12) à l’intérieur du conduit (12) et solidaire de celui-ci, cette première plaque plane étant percée d’un orifice central (141) et d’une pluralité d’orifices périphériques (143) disposés de manière circonférentielle autour de l’orifice central, - a first flat plate (14) extending transversely to the duct (12) inside the duct (12) and integral with the latter, this first flat plate being pierced with a central orifice (141) and with a plurality of peripheral orifices (143) disposed circumferentially around the central orifice,
- une deuxième plaque plane (16) s’étendant transversalement au conduit- a second flat plate (16) extending transversely to the duct
(12) à l’intérieur du conduit (12) et montée mobile en rotation à l’intérieur de celui-ci, la deuxième plaque ayant une pluralité d'orifices (161, 163) dont au moins la forme et l'espacement correspondent à ceux des orifices de la première plaque,(12) inside the duct (12) and mounted rotatably therein, the second plate having a plurality of orifices (161, 163) of which at least the shape and the spacing correspond those of the holes in the first plate,
- au moins un élément de support (17, 18) supportant la deuxième plaque (16) de manière pivotante par rapport à la première plaque,- at least one support element (17, 18) supporting the second plate (16) pivotally relative to the first plate,
- un système de réglage (20) venant en prise avec la deuxième plaque à orifices pour régler les positions relatives des orifices périphériques (143, 163) des première et deuxième plaques par rotation de la deuxième plaque, caractérisée en ce que chaque orifice périphérique (143) de la première plaque est entouré d’une cheminée (145) solidaire de la première plaque et faisant saillie d’une face (14a) de celle-ci située du côté opposé à la deuxième plaque. - an adjustment system (20) engaging with the second orifice plate for adjusting the relative positions of the peripheral orifices (143, 163) of the first and second plates by rotation of the second plate, characterized in that each peripheral orifice ( 143) of the first plate is surrounded by a chimney (145) integral with the first plate and projecting from a face (14a) thereof located on the side opposite to the second plate.
2. Vanne (10) selon la revendication 1, caractérisée en ce que chaque orifice périphérique (163) de la deuxième plaque est entouré d’une cheminée (165) solidaire de la deuxième plaque et faisant saillie d’une face (16b) de celle-ci située du côté opposé à la première plaque à orifices. 2. Valve (10) according to claim 1, characterized in that each peripheral orifice (163) of the second plate is surrounded by a chimney (165) integral with the second plate and projecting from one face (16b) of the latter located on the side opposite to the first orifice plate.
3. Vanne (10) selon la revendication 1 ou 2, caractérisée en ce que chaque cheminée (145, 165) est formée d’une paroi dont la surface interne s’étend dans le prolongement d’une surface interne de l’orifice qu’elle entoure. 3. Valve (10) according to claim 1 or 2, characterized in that each chimney (145, 165) is formed of a wall, the internal surface of which extends in the extension of an internal surface of the orifice which 'she surrounds.
4. Vanne (10) selon l’une quelconque des revendications 1 à 3, caractérisée en ce que chaque cheminée (145, 165) est formée d’une paroi dont au moins la surface interne (145a, 165a) s’étend perpendiculairement à la plaque à laquelle elle est solidarisée. 4. Valve (10) according to any one of claims 1 to 3, characterized in that each chimney (145, 165) is formed of a wall of which at least the internal surface (145a, 165a) extends perpendicularly to the plate to which it is secured.
5. Vanne (10) selon l’une quelconque des revendications 1 à 4, caractérisée en ce que chaque cheminée (145, 165) est réalisée d’un seul tenant avec la plaque à laquelle elle est solidarisée. 5. Valve (10) according to any one of claims 1 to 4, characterized in that each chimney (145, 165) is made in one piece with the plate to which it is secured.
6. Vanne (10) selon l’une quelconque des revendications 1 à 5, caractérisée en ce que chaque cheminée (145, 165) s’étend sur une hauteur égale à au moins trois fois le diamètre interne de l’orifice périphérique auquel elle est solidarisée suivant une direction perpendiculaire à celle-ci. 6. Valve (10) according to any one of claims 1 to 5, characterized in that each chimney (145, 165) extends over a height equal to at least three times the internal diameter of the peripheral orifice to which it. is secured in a direction perpendicular thereto.
7. Vanne (10) selon l’une quelconque des revendications 2 ou 3 à 5 lorsqu’elles dépendent de la revendication 2, caractérisée en ce que chaque cheminée (165) solidaire de la deuxième plaque s’étend sur une hauteur égale à au moins cinq fois le diamètre interne de l’orifice périphérique auquel elle est solidarisée, suivant une direction perpendiculaire à celle-ci. 7. Valve (10) according to any one of claims 2 or 3 to 5 when dependent on claim 2, characterized in that each chimney (165) integral with the second plate extends over a height equal to at least five times the internal diameter of the peripheral orifice to which it is secured, in a direction perpendicular thereto.
8. Vanne (10) selon l’une quelconque des revendications 1 à 7, caractérisée en ce que la première plaque à orifices (14) est pourvue, du côté de sa face (14b) dirigée vers la deuxième plaque à orifices (16), d’au moins un élément d'étanchéité (22-25) entourant chacun des orifices périphériques (143) de la première plaque (14), chaque élément d’étanchéité (22-25) présentant un premier bord (22a-25a) solidaire de la première plaque à orifices (14) et un deuxième bord libre opposé (22b-25b) en contact glissant avec la deuxième plaque (16). 8. Valve (10) according to any one of claims 1 to 7, characterized in that the first orifice plate (14) is provided on the side of its face (14b) directed towards the second orifice plate (16) , at least one sealing element (22-25) surrounding each of the peripheral orifices (143) of the first plate (14), each sealing element (22-25) having a first edge (22a-25a) integral with the first orifice plate (14) and a second opposite free edge (22b-25b) in sliding contact with the second plate (16).
9. Vanne (10) selon la revendication 8, caractérisée en ce qu’une surface interne (22c, 23c) d’élément d’étanchéité la plus proche de l’orifice périphérique entouré s’étend dans le prolongement d’une surface interne de l’orifice entouré, de préférence perpendiculairement à la première plaque (14). 9. Valve (10) according to claim 8, characterized in that an internal surface (22c, 23c) of the sealing element closest to the surrounded peripheral orifice extends in the extension of an internal surface. of the surrounded orifice, preferably perpendicular to the first plate (14).
10. Vanne (10) selon la revendication 8 ou 9, caractérisée en ce qu’une surface externe (22d, 25d) d’élément d’étanchéité la plus éloignée de l’orifice périphérique entouré présente une forme évasée en direction de la deuxième plaque (16). 10. Valve (10) according to claim 8 or 9, characterized in that an outer surface (22d, 25d) of the sealing element furthest from the surrounded peripheral orifice has a flared shape towards the second. plate (16).
11. Vanne (10) selon l’une quelconque des revendications 1 à 10, caractérisée en ce qu’un élément de support (18) est un support tubulaire solidaire de la première plaque et reliant de manière étanche aux fluides l’orifice central de la première plaque à l’orifice central de la deuxième plaque. 11. Valve (10) according to any one of claims 1 to 10, characterized in that a support element (18) is a tubular support integral with the first plate and connecting in a fluid-tight manner the central orifice of the first plate to the central hole of the second plate.
12. Vanne (10) selon l’une quelconque des revendications 1 à 11, caractérisée en ce que les orifices périphériques de chaque plaque sont de dimension inférieure aux orifices centraux. 12. Valve (10) according to any one of claims 1 to 11, characterized in that the peripheral orifices of each plate have a dimension smaller than the central orifices.
13. Vanne (10) selon l’une quelconque des revendications 1 à 12, caractérisée en ce que les orifices périphériques sont disposés à équidistance les uns des autres et/ou de l’orifice central de la plaque dont ils font partie. 13. Valve (10) according to any one of claims 1 to 12, characterized in that the peripheral orifices are arranged equidistant from each other and / or from the central orifice of the plate of which they form part.
14. Canalisation verticale ou sensiblement verticale destinée à recevoir un fluide en circulation suivant une direction d’écoulement du haut vers le bas, caractérisée en ce qu’elle comprend une vanne selon l’une quelconque des revendications 1 à 13, disposée de sorte que le fluide entre par les orifices de la première plaque et sorte par les orifices de la deuxième plaque. 14. Vertical or substantially vertical pipe intended to receive a circulating fluid in a direction of flow from top to bottom, characterized in that it comprises a valve according to any one of claims 1 to 13, arranged so that the fluid enters through the orifices of the first plate and leaves through the orifices of the second plate.
EP20821224.1A 2019-12-17 2020-12-14 Valve with variable opening Pending EP4077986A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1914628A FR3104666B1 (en) 2019-12-17 2019-12-17 VARIABLE ORIFICE VALVE
PCT/EP2020/085895 WO2021122409A1 (en) 2019-12-17 2020-12-14 Valve with variable opening

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EP4077986A1 true EP4077986A1 (en) 2022-10-26

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EP20821224.1A Pending EP4077986A1 (en) 2019-12-17 2020-12-14 Valve with variable opening

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US (1) US11859726B2 (en)
EP (1) EP4077986A1 (en)
JP (1) JP2023511001A (en)
KR (1) KR20220111708A (en)
CN (1) CN115066575A (en)
FR (1) FR3104666B1 (en)
WO (1) WO2021122409A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114687690B (en) * 2022-03-31 2024-03-29 中海石油(中国)有限公司 Slip setting mechanism and downhole throttler comprising same
EP4321232A1 (en) * 2022-08-09 2024-02-14 ANDRITZ Separation GmbH Fluid control device for a filter drum, fluid control assembly, and filtration device

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FR3104666B1 (en) 2022-03-25
US11859726B2 (en) 2024-01-02
WO2021122409A1 (en) 2021-06-24
US20230028032A1 (en) 2023-01-26
FR3104666A1 (en) 2021-06-18
JP2023511001A (en) 2023-03-16
CN115066575A (en) 2022-09-16
KR20220111708A (en) 2022-08-09

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